[DDC-1925] Bug in UnitOfWork and ManyToMany relations Created: 14/Jul/12  Updated: 16/Apr/14  Resolved: 29/Jul/12

Status: Resolved
Project: Doctrine 2 - ORM
Component/s: ORM
Affects Version/s: 2.1
Fix Version/s: 2.3
Security Level: All

Type: Bug Priority: Major
Reporter: Andrew Assignee: Marco Pivetta
Resolution: Fixed Votes: 0
Labels: None



Lets say, I have entity Forum with ManyToMany relations with User.
I need to validate user changes and I use code like

$uow = $this->getDoctrine()>getEntityManager()>getUnitOfWork();
$changeSet = $uow->getEntityChangeSet($forum);
if (.... bla-bla-bla....) {
$em = $this->getDoctrine()->getEntityManager();

Unfortunately, whenever I try to change manyToMany relations - I got error
SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '4-4' for key 'PRIMARY'

If I comment uow code - everything works just great.

It looks like bug in UnitOfWork implementation.

Let me know if you need more details from me.

Comment by Marco Pivetta [ 16/Jul/12 ]

What is the part you commented out? Also, in what context is your code executed?

Comment by Andrew [ 16/Jul/12 ]

I got error when $em->persist($forum); $em->flush(); executed.

I can create github repository with code, which reproduce this error, if you want.

Comment by Marco Pivetta [ 16/Jul/12 ]

Please do

Comment by Andrew [ 16/Jul/12 ]

that would be simple symfony2 application - will it work for you?

Comment by Marco Pivetta [ 16/Jul/12 ]

As long as the code is related to doctrine. Otherwise this issue is quite incomplete

Comment by Andrew [ 16/Jul/12 ]

Done, please check https://github.com/zhil/testDoctrine

In few words, when I add code like
$uow = $this->getDoctrine()>getEntityManager()>getUnitOfWork();
$changeSet = $uow->getEntityChangeSet($product);

before $em->persist(); $em->flush();

I got fake MYSQL error

Thank in advance for your help

Comment by Andrew [ 19/Jul/12 ]

Just wonder - is it bug in doctrine2 or its problems somewhere else? (symfony2/my code/ etc.)

This is part of the live project - I need to fix it

Comment by Marco Pivetta [ 19/Jul/12 ]

I think it is related with the fact that you're using the `UnitOfWork` manually. You can probably try to fix the problem by moving your code to an event subscriber until this is fixed.

Comment by Andrew [ 19/Jul/12 ]

Well, I used UnitOfWork, because I need to know what was changed during object validation (for example, property status can be changed only in predefined cases etc.).

Ok, thanks for the suggestion - I will implement some temporary solution for this problem

Comment by Marco Pivetta [ 19/Jul/12 ]

I think I spotted where this happens, but I don't have a clear overview on the situation. Will try to work on this...

Comment by Andrew [ 19/Jul/12 ]

Thanks for the checking this issue.
I have already patched my application with ugly patch. Just in case solution will take some time and somebody else will need similar patch. I patched entity like

entity {
public $previousStatusBugfix = -1;
public function setStatus($status)

{ // check http://www.doctrine-project.org/jira/browse/DDC-1925?focusedCommentId=18344#comment-18344 // Ticket #651 $this->previousStatusBugfix = $this->status; $this->status = $status; }


and validator

if(($object->previousStatusBugfix != 1) && ($object>previousStatusBugfix != $object->getStatus()))

{ $changeSet = array("status"=>array(0=>$object->previousStatusBugfix, 1=>$object->getStatus())); }

Comment by Marco Pivetta [ 19/Jul/12 ]

I just wrote a couple of tests (attaching them to the issue shortly) and found out that on `>=2.2.x` your code runs perfectly.
The problem is on the `2.1.x` branch, and the commit that fixed the issue is https://github.com/doctrine/doctrine2/commit/4474d30 for DDC-1210

Now looking if it can be merged into `2.1.x` since it doesn't seem to cause any BC break.

Comment by Benjamin Eberlei [ 19/Jul/12 ]

A related Github Pull-Request [GH-402] was opened

Comment by Benjamin Eberlei [ 19/Jul/12 ]

A related Github Pull-Request [GH-403] was opened

Comment by Marco Pivetta [ 19/Jul/12 ]

Duplicate of DDC-1210

Comment by Benjamin Eberlei [ 23/Jul/12 ]

A related Github Pull-Request [GH-403] was closed

Comment by Benjamin Eberlei [ 29/Jul/12 ]

A related Github Pull-Request [GH-402] was closed

Comment by Doctrine Bot [ 12/Nov/13 ]

A related Github Pull-Request [GH-402] was closed:

Comment by Doctrine Bot [ 13/Nov/13 ]

A related Github Pull-Request [GH-403] was closed:

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